Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
140025goodexcellent11excellent
130029goodexcellent11excellent
12005excellentexcellent11excellent
11007excellentexcellent11excellent
100018excellentexcellent11excellent
090014excellentexcellent31excellent
080021goodexcellent51excellent
070017excellentexcellent51excellent
060021goodexcellent41excellent
050015excellentexcellent31excellent
040021goodexcellent41excellent
030018excellentexcellent51excellent
020019excellentexcellent51excellent
010016excellentexcellent31excellent
000013excellentexcellent31excellent
230014excellentexcellent21excellent
220014excellentexcellent31excellent
210010excellentexcellent21excellent
20003excellentexcellent21excellent
19002excellentexcellent11excellent
18001excellentexcellent11excellent
17002excellentexcellent11excellent
16002excellentexcellent11excellent
150012excellentexcellent11excellent